Cheap flights from Sioux Falls to London from £456

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/11. Fares are subject to change and may not be available on all flights or dates of travel.
FSD — LON
18 Oct — 25 Oct1
1 adult
1 adult, Economy

Cheap flight deals from Sioux Falls to London

Discover tips and strategies to find the most affordable flight options for your journey from Sioux Falls (FSD) to London (LON). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 18 September 2025.

Round-trip from

£456

Popular in

January

Cheapest in

May

Average price

£670
Delta
  • Delta
  • 12/11-19/11
  • 3 total stops
  • 31h 51m total
  • Sioux Falls to London
Highest demand for flights based on searches. 14% potential increase in price (£103 potential increase over avg. return price).
Cheapest flight prices on average. 7% potential price decrease (£45 potential savings vs. average return price).
Average for round-trip flights in September 2025

Find flight deals from Sioux Falls to London

Cheapest flights from Sioux Falls to London
Explore the most affordable flight options available from Sioux Falls to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 September 2025.

Wed 12/1113:30FSD - LHR
1 stop11h 35mDelta
Wed 19/1108:55LHR - FSD
2 stops20h 16mDelta
Deal found 15/9£456
Wed 12/1113:30FSD - LHR
1 stop11h 35mKLM
Wed 19/1108:55LHR - FSD
1 stop20h 16mKLM
Deal found 15/9£462
Fri 26/905:30FSD - LHR
1 stop19h 15mKLM
Tue 30/912:25LHR - FSD
1 stop16h 19mKLM
Deal found 16/9£499
Fri 26/905:30FSD - LHR
1 stop19h 15mDelta
Tue 30/911:45LHR - FSD
2 stops16h 59mDelta
Deal found 16/9£503
Wed 10/1210:55FSD - LHR
1 stop14h 10mKLM
Thu 18/1208:55LHR - FSD
1 stop20h 18mKLM
Deal found 16/9£506
Wed 10/1213:30FSD - LHR
2 stops15h 55mVirgin Atlantic
Thu 18/1210:45LHR - FSD
2 stops18h 26mVirgin Atlantic
Deal found 16/9£510
Wed 1/1008:00FSD - LHR
2 stops19h 35mUnited Airlines
Wed 8/1007:25LHR - FSD
2 stops18h 56mUnited Airlines
Deal found 17/9£511
Tue 7/1008:00FSD - LHR
2 stops19h 35mUnited Airlines
Fri 17/1006:30LHR - FSD
2 stops21h 52mUnited Airlines
Deal found 16/9£513
Wed 1/1013:19FSD - LHR
1 stop13h 41mAmerican Airlines
Wed 8/1012:00LHR - FSD
1 stop15h 16mAmerican Airlines
Deal found 16/9£522
Sun 7/1211:20FSD - LCY
2 stops19h 30mMultiple Airlines
Sat 13/1212:20LCY - FSD
3 stops39h 31mMultiple Airlines
Deal found 16/9£567
Sat 27/912:28FSD - LGW
2 stops40h 27mMultiple Airlines
Wed 1/1014:00LGW - FSD
1 stop24h 27mMultiple Airlines
Deal found 16/9£577
Wed 10/1218:08FSD - LCY
2 stops16h 32mLufthansa
Thu 18/1209:40LCY - FSD
2 stops16h 29mLufthansa
Deal found 16/9£634

Cheapflights Fare Finder

 
Customise your flight search to find flights from Sioux Falls to London that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 18 September 2025.
Use the filters below to find and compare flights from Sioux Falls to London that are best for you.

Fly from

Sioux Falls

Fly to

London

Route

Depart

Return

Price

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

Wed 12/11

13:30-07:05

1 stop11h 35m

London Heathrow

Wed 19/11

08:55-23:11

2 stops20h 16m

£456

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

Wed 10/12

10:55-07:05

1 stop14h 10m

London Heathrow

Thu 18/12

08:55-23:13

1 stop20h 18m

£506

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

Wed 10/12

13:30-11:25

2 stops15h 55m

London Heathrow

Thu 18/12

10:45-23:11

2 stops18h 26m

£510

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

Wed 1/10

08:00-09:35

2 stops19h 35m

London Heathrow

Wed 8/10

07:25-20:21

2 stops18h 56m

£511

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

Tue 7/10

11:19-06:20

1 stop13h 01m

London Heathrow

Fri 17/10

07:30-22:22

2 stops20h 52m

£514

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

Mon 6/10

13:58-09:40

1 stop13h 42m

London Heathrow

Tue 14/10

08:30-22:22

2 stops19h 52m

£514

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

Wed 1/10

13:19-09:00

1 stop13h 41m

London Heathrow

Wed 8/10

12:00-21:16

1 stop15h 16m

£522

Sioux FallsLondon

FSD - LCY

FSDLCY

Sioux Falls Joe Foss Field

Sun 7/12

11:20-12:50

2 stops19h 30m

London City

Sat 13/12

12:20-21:51

3 stops39h 31m

£567

Sioux FallsLondon

FSD - LCY

FSDLCY

Sioux Falls Joe Foss Field

Wed 10/12

18:08-16:40

2 stops16h 32m

London City

Thu 18/12

09:40-20:09

2 stops16h 29m

£634

Sioux FallsLondon

FSD - LCY

FSDLCY

Sioux Falls Joe Foss Field

Sun 2/11

13:47-16:40

2 stops20h 53m

London City

Sat 8/11

12:20-21:46

3 stops39h 26m

£670

Flights are sorted by cheapest return flights first.

Deals found on 15/9

Showing 1-10 of 18 results
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Best time to book a flight from Sioux Falls to London

Have a flexible travel schedule? Discover the best time to fly to London from Sioux Falls with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Sioux Falls to London

What is the cheapest month to book a flight from Sioux Falls to London?

Currently, January is the cheapest month in which you can book a flight from Sioux Falls to London (average of £112). Flying from Sioux Falls to London in August is currently the most expensive (average of £164). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

How much does it cost for a return flight from Sioux Falls to London?

What’s the top stopover airport for flights from Sioux Falls to London?

Share of one-stop return flights from Sioux Falls to London chosen by Cheapflights users in the past 12 months, using the same stopover each way.

Minneapolis (MSP) – chosen by Cheapflights users on 67% of one-stop itineraries from Sioux Falls to London on Cheapflights.

What’s the cheapest stopover airport for flights from Sioux Falls to London?

Average return fare for one-stop flights from Sioux Falls to London, chosen by Cheapflights users in the past 12 months, with the same stopover each way.

Chicago (ORD) is the most affordable one-stop option, with an average return flight price of £546.

What’s the fastest stopover option from Sioux Falls to London?

Shortest average travel time for one-stop one-way flights from Sioux Falls to London, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by stopover airport.

Flights via Chicago (ORD) have the shortest average one-way travel time for one-stop routes: 10h 30m.

Which airport typically offers the quickest stopover for flights from Sioux Falls to London?

Average stopover duration for one-stop one-way flights from Sioux Falls to London, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Chicago (ORD) offer the fastest connection on this route, with an average stopover time of 1h 28m.

Related info for your journey

Find useful and relevant information for your journey from Sioux Falls to London. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • What airport do you fly from for flights from Sioux Falls to London?

    For a flight from Sioux Falls to London, you will be flying from Joe Foss Field. Sioux Falls Joe Foss Field (FSD) is just 2.6 mi from the center of the city. Joe Foss Field is the only Sioux Falls airport and it handles 0 outbound flights to London per day. 0 airlines have flights to London from Sioux Falls Joe Foss Field on a regular basis.

  • How long is the flight from Sioux Falls to London?

    For as low as £456, Delta can have you in London from Sioux Falls in 11h 35m. The distance from Sioux Falls to London is about 4189 mi. Both multi-stop and direct flights can be found to your destination and back.

  • What are the most popular routes from Sioux Falls to London?

  • Can I find deals for flights from Sioux Falls to London that include hotel bookings?

    Yes. In addition to deals on Sioux Falls to London flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Sioux Falls to London?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Sioux Falls to London.

  • Can I find deals for business class flights from Sioux Falls to London?

    Yes. Cheapflights offers flight deals from Sioux Falls to London by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Sioux Falls to London?

    Currently, January is the cheapest month in which you can book a flight from Sioux Falls to London (average of £112). Flying from Sioux Falls to London in August is currently the most expensive (average of £164). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Sioux Falls to London

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Can Cheapflights find flights from Sioux Falls to London with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Sioux Falls to London, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Sioux Falls to London become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to London from Sioux Falls today and book when prices fit your budget.

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